C1A13: ABS/Stability Control Communication Fault
4 vehicles · 3 makes · $1,000-$3,500 repair
Most Reported On
C1A13 is an OBD-II diagnostic trouble code meaning “ABS/Stability Control Communication Fault.” C1A13 is a brake-system communication code indicating a fault in the data exchange between the ABS and the stability control (ESC/VSC) function. These systems share wheel speed, yaw, steering, and brake data over the vehicle's network to coordinate ABS, traction, and stability control. When expected messages are missing, corrupted, or delayed, the module flags a communication fault and typically disables stability/traction features. It generally points to a network (CAN bus) problem, a non-responding module, or wiring/power issues rather than a single mechanical part. Base braking remains, but the safety-control functions may be offline. This code is most commonly reported on 2003-2021 Land Rover Range Rover, 2005-2022 Land Rover Range Rover Sport, and 2004-2019 Jaguar XJ, plus 1 other vehicle, with repair costs ranging from $1,000 to $3,500.
Common Causes
Typical Repair Cost
Based on 4 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
To diagnose C1A13, you'll need an OBD-II scanner. Here are our recommendations at every price point.
ANCEL AD310 Classic OBD-II Scanner
by ANCEL
A simple, affordable code reader that reads and clears check engine codes. Great for quick diagnostics on any OBD-II vehicle (1996+).
- Read & clear engine codes
- View freeze frame data
- I/M readiness status
- No batteries or app needed
BlueDriver Pro Bluetooth Scanner
by BlueDriver
Bluetooth OBD-II scanner with a free companion app. Provides enhanced diagnostics, smog readiness, and repair reports sourced from a database of verified fixes.
- Enhanced diagnostics (ABS, SRS, transmission)
- Repair Reports with verified fixes
- Smog check readiness
- Free app (iOS & Android)
LAUNCH CRP123X OBD-II Scanner
by LAUNCH
A professional-grade handheld scanner that reads all four major systems (engine, transmission, ABS, SRS) with live data streaming and graphing.
- Engine, transmission, ABS, SRS diagnostics
- Live data stream & graphing
- AutoVIN for vehicle identification
- Free lifetime updates via Wi-Fi
Autel MaxiCOM MK808S Diagnostic Tool
by Autel
Shop-level diagnostic tablet with bi-directional control, active tests, and full system coverage. Ideal for serious DIYers and small shops.
- All-system diagnostics (25+ modules)
- Bi-directional control & active tests
- Oil reset, EPB, BMS, TPMS, injector coding
- 7-inch touchscreen with Android OS
As an Amazon Associate, we earn from qualifying purchases. Prices are approximate and may vary.
Vehicles Affected (4)
FAQ
What does C1A13 mean?
C1A13 stands for "ABS/Stability Control Communication Fault." C1A13 is a brake-system communication code indicating a fault in the data exchange between the ABS and the stability control (ESC/VSC) function. These systems share wheel speed, yaw, steering, and brake data over the vehicle's network to coordinate ABS, traction, and stability control. When expected messages are missing, corrupted, or delayed, the module flags a communication fault and typically disables stability/traction features. It generally points to a network (CAN bus) problem, a non-responding module, or wiring/power issues rather than a single mechanical part. Base braking remains, but the safety-control functions may be offline.
What are the most common causes of C1A13?
The most common causes of C1A13 are: CAN bus / communication wiring fault between modules, Unresponsive or failed ABS or stability control module, Low or unstable battery/system voltage, Corroded, loose, or damaged module connectors, Poor power or ground connection at a control module, Related sensor faults (yaw, steering angle, wheel speed) breaking data plausibility, Software mismatch after a module replacement without programming. The specific cause varies by vehicle.
How much does it cost to fix C1A13?
Repair costs for C1A13 range from $1,000 to $3,500, depending on the vehicle and root cause.
Which vehicles are affected by C1A13?
Au7o has documented C1A13 across 4 vehicle models from 3 manufacturers: Jaguar, Land Rover, MINI.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.